Sedimentology, Geochemistry, and Geochronology of unit PR1 of the lower Fifteenmile group and the Pinguicula Group, Wernecke and Ogilvie Mountains, Yukon, Canada: Mesoproterozoic environments and paleocontinental reconstructions

Unit PR1 of the lower Fifteenmile group and the Pinguicula Group are exposed in Ogilvie and Wernecke mountains, Yukon, Canada. Unit PR1 records deposition of turbiditic interbedded sandstone and mudstone with scattered carbonate olistoliths. The Pinguicula Group records deposition of non-cyclic siliciclastic and carbonate strata on low-energy slopes affected by rare high-energy deposits. The Pinguicula Group comprises three newly formalised formations: the Mount Landreville, Pass Mountain, and Rubble Creek (formerly units A, B, and C, respectively). The older unit PR1 has a near-unimodal detrital zircon population with an age of 1499 ± 2.7 Ma and εNd(t) values from -8.17 to 3.92. Overall, detrital zircon data from the Pinguicula Group display a polymodal detrital zircon population with a maximum age of